Understanding of Input and Output

Summary of Chapter 3: Understanding of Input and Output.

Input

Input is any data and instructions entered into the memory of a computer.

> It can be entered into the computer in the form of programs, commands and user responses.

> Input DEVICES >> allows users to enter data and instructions into a computer. 

   Some of the input devices: Keyboard, Pointing Devices, Pen Input, Game Controllers, Digital Cameras,        Voice Input, Video Input and others.

> Several input devices are available to assist physically challenged users: keyguard, keyboards with larger        keys, On - screen keyboard, various pointing devices, head-mounted pointer, gesture recognition and            computerized implant devices.

Keyboard

Mouse

 

Output

Output is data that has been processed into a useful form such as text, audio, graphics and video.

> Output DEVICES>> component that conveys information to one or more people.

   Some of the output devices: Display devices, Printers, Speakers, Headphones, Data Projectors,                    Interactive Whiteboards, Force - feedback game controllers and Tactile Output.

> Physically Challenged Users for Output Devices: many accessibility options exist for users with various          disabilities.